

Air fryers are convection ovens. They’re just in a convenient case and size. There’s literally no difference in how they work, other than being less useful than a full sized convection oven.
I suppose technically the air fryer is using a bit less energy due to the smaller size.
I wasn’t trying to imply that they are useless. Just that as far as the food you make in them is concerned, it’s just a smaller convection oven.
Convection ovens are just as fast because of how they work. There’s basically no heat up time. They just use a lot more energy to do the same thing.